Moving platform or inclined plane.



No. 893,574. PATENTED JULY 14, 1908.. J. M. DODGB v MOVING PLATFORM OR INGLINED PLANE.

APPLIOATION FILED OUT. 11,1905.

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J. M. DODGE MOVING PLATFORM 0R INGLINED PLANE.

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UNITED STATES IiATENT oFFroE.

JAMES M. DODGE, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO THE STAIR LIFT COM- PANY, OF CAMDEN, NEW JEPSEYMA CORPORATION OF NEW JERSEY.

MOVING rLA'rronilr on INCLINED PLANE.

Specification of Letters Patent.

Patented July 14, 1908.

Original application filed January 22, 1898, Serial No. 667,634. Renewed November 21, 1901, Serial N 0. 83,186.

Divided and this application flied October 1-1, 1905. Serial No. 282,241. I

T 0 all whom it may concern:

Be it known that I, JAMES M. DoDeE, a citizen of the United States, residing in Phila delphia, Pennsylvania, have invented certain Improvements in Moving Platforms or Inclined Planes, (being a division of my application filed January 22, 1898, under Serial No. 667,634,) of which the following is a specification.

My invention relates to certain improvements in moving platforms or inclined planes.

This application is a division of my application which resulted in Patent 802,847, Oc-

tober 24, 1905.

' The main object of the present invention is to so construct a moving platform or inclined panying drawings, in W iich:

wheels.

Figure 1, IS a view showing a traveling inclined plane illustrating my invention; Fig. 2, is a plan view of Fig. 1; Fig. 3, is a loi'igitudinal sectional view of a traveling stairway illustrating my invention; and Fig. 4, is a view of a portion of a stairway illustrating my invention.

Prior to my invention there were three types of inclined carriers for passengers, namely :-the inclined moving platform driven from the upper end which consisted of a series of enchained flat sections driven by sprocket wheels engaging the sections, the endless belt passin around the upper driven sprocket wheel. other type of conveyer was made up of a series of step sections, the step sections being connected by chains and the moving portion was driven by sprocket wheels engaging the chains at the upper end, the chains passing around said sprocket A third construction was one in which the steps were formedon the inclined portion and these steps were driven by a wheel pushing the step sections forward, the driving mechanism being at the lower end of the stairway.

\ The present invention relates particularly to certain improvements in the class 'of inclined carriers in which the sections are enchained.

As shown in the drawings I may extend the moving sections at an abrupt angle for a considerable distance above the platform or floor to form an abutment, as illustrated and claimed in ,my reissue Patent No. 12,036, dated September th, 1902.

Fig. 1 of the drawings is a view of a moving inclined plane. A represents a lower floor or fixed platform, B an upper floor or platform and D the traveling inclined plane made up of a series of enchained sections (Z adapted to ways E on each side. F is a driving sprocket wheel at one end of the inclined plane and F is a driving sprocket wheel preferably engaging both the carrying and return runs and situated at a point intermediate the ends of the stairway and, as shown in Fig. 1, at the point where the said sections change direction of movement. In longv runs more of these intermediate driving wheels may be used if necessary. As the sections are adapted to suitable guides the several driving wheels are so operated that they will turn in unison and the purpose ofthe additional driver or drivers is to relieve the primary driver, especially at the points where the sections change direction of movement so that the apparatus will work evenly and without loss of power. There may be also an abutment at both ends of the inclined plane if desired, so that the direction of travel of theendless carrier can be reversed.

A series of drivers may be used in connection with a moving stairway as illustrated in Fig. 4, in which the step sections d are connected together by chains D to form the endless carrier- D. In this instance the driving wheel would be at the u per end and intermediate driving wheel F may be located at the point where the sections are deflected and may engage the return ,run of the endless'carrier, as shown.

In Fig. 3, I have shown a moving stairway having the step sections which are pushed from a driving wheel F'at the lower end, the

step sections being enchained. The other driving wheels F, F are inserted at the points where the sections are deflected.

It will be understood that a series of drivers stantially as described.

2. In a device of thev class described, the combination of a series of sections, said sections being enchained to form an endless carrier, Ways in which the said sections travel, and a sprocket wheel interposed between the ascending and descending series of said sections and intermediate the ends thereof and meshing with the moving portions on both the carrying and return runs, substantially as described.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing Witnesses.

JAMES M. DODGE.

Witnesses:

WILL. A. BARR, Jos. H. KLEIN. 

